@article{Walker-Loud:2012KJ,
  author = "Walker-Loud, André  and  Carlson, Carl E  and  Miller, Gerald",
  title = "{Cottingham formula for the electromagnetic self-energy contribution to Mp - Mn}",
  doi = "10.22323/1.164.0136",
  journal = "PoS",
  year = 2012,
  volume = "Lattice 2012",
  pages = "136"
}